import os
from samplehc import SampleHealthcare

client = SampleHealthcare(
    api_key=os.environ.get("SAMPLEHC_API_KEY"),  # This is the default and can be omitted
)
response = client.v2.communication.send_letter(
    document={
        "id": "id",
        "file_name": "fileName",
    },
    to_address={
        "address": {
            "city": "city",
            "state": "state",
            "street_lines": ["string"],
            "zip_code": "zipCode",
        },
        "name": "name",
    },
)
print(response.tracking_id)

{
  "trackingId": "<string>"
}